Answer:
79 years but there is no limit for a person to live
Explanation:
Answer:
lysosome
Explanation:
It deals with food, and like a vacuum, stores things
Answer:
RER
Explanation:
The proteins and lipids, essential for building the cell membrane, are
manufactured by the rough endoplasmic reticulum
Answer:
tertiary; quaternary
Explanation:
The orientation of all the atoms of a protein in three dimensions represents its tertiary structure. It includes the folding of the polypeptide chains in a way that brings are far apart amino acids of its secondary structure close together. Various segments of a polypeptide chain interact to form tertiary structures and these segments are held together by different kinds of weak interactions.
However, disulfide cross-links between the segments of polypeptide chains also stabilize the tertiary structure of some proteins. Likewise, disulfide bonds also hold the protein subunits of some proteins together and thereby, contribute to the quaternary structure. For example, two light chains of an antibody are joined together by disulfide bonds.
